How many grams of H2O would be created from the combustion of 142.7 grams of CH4? (Picture included)

answer:

k

Explanation:

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

"the periodic table is arranged in order of atomic number."